Effect of strain rate on flow stress and anisotropy of DP600, TRIP780, and AA5182-O sheet metal alloys
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- 作者：T. Rahmaan ; trahmaan@uwaterloo.ca" class="auth_mail" title="E-mail the corresponding author ; A. Bardelcik ; J. Imbert ; C. Butcher ; M.J. Worswick
- 关键词：High strain rate constitutive behavior ; Anisotropy ; Constitutive model ; Advanced high strength steels ; AA5182-O
- 刊名：International Journal of Impact Engineering
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：88
- 期：Complete
- 页码：72-90
- 全文大小：7021 K
文摘
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Strain rate effect on flow stress and anisotropic behavior of DP600, TRIP780 and AA5182-O sheet metal alloys are presented.
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DP600 and TRIP780 showed moderate rate sensitivity while AA5182-O showed relatively low or even negative rate sensitivity.
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Portevin–Le Châtelier (PLC) effect was observed in AA5182-O up to a strain rate of 1 s−1.
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The Lankford coefficients were found to be relatively insensitive to strain rate for all three alloys.
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The Voce-Modified (VM) and Voce-Modified-Extrapolated (VME) models were utilized to capture the behavior of the materials.